<![CDATA[Triangle Centers, hurraaa!]]>
https://help.geogebra.org/topic/triangle-centers-hurraaa-
Wed, 09 Nov 2011 15:41:28 +0000Wed, 09 Nov 2011 03:07:29 +0000Zend_Feed<![CDATA[Hi, for GG we just copied a perl script and removed "$"s :) The real thanks should go to Jason Cantarella, who rolled up his sleeves and transcribed 3000 triangle centers to computer readable form (http://www.jasoncantarella....). But I'm glad you like it. Note that if you need to prove that 3 lines are concurrent, you can now create their intersection and using IndexOf find out whether it belongs to the known triangle centers. Also combines nicely with TriangleCubic command, which currently supports "only" 100 cubics, but this is being enhanced manually.]]>
https://help.geogebra.org/topic/triangle-centers-hurraaa-#comment-93061
Wed, 09 Nov 2011 08:21:29 +0000<![CDATA[Hi. I couldn't get to work the IndexOf command. I don't understand its syntax :cry: . I was expecting something like IndexOf[D,{A,B,C}] where ABC are the vertices of a triangle and D is an arbitrary point. Regards, jtico]]>
https://help.geogebra.org/topic/triangle-centers-hurraaa-#comment-93063
Wed, 09 Nov 2011 12:25:19 +0000<![CDATA[@jtico: you may try IndexOf[D,Sequence[TriangleCenter[A,B,C,k],k,1,3000]] @iotarho: any ideas for further common triangle centers welcome. http://wiki.geogebra.org/en... The ETC website is really slow, but we can't do anything about it.]]>
https://help.geogebra.org/topic/triangle-centers-hurraaa-#comment-93069
Wed, 09 Nov 2011 15:00:36 +0000<![CDATA[Ok, I see that I misunderstood your post. But this is fantastic you may try IndexOf[D,Sequence[TriangleCenter[A,B,C,k],k,1,3000]] Again, thank you very much :) :) jtico]]>
https://help.geogebra.org/topic/triangle-centers-hurraaa-#comment-93073
Wed, 09 Nov 2011 15:41:28 +0000